Priority of Comparison Operations in PHP

The operation and has priority over or. In the following example, the condition will trigger if the variable $num is from 0 to 5 OR from 10 to 20:

php<?php
  $num = 3;
  
  if ($num > 0 and $num < 5 or $num > 10 and $num < 20) {
    echo '+++';
  } else {
    echo '---';
  }
?>